NAME

Sympa::DataSource - Base class of Sympa data source subclasses

SYNOPSIS

  # To implemnt Sympa::DataSource::Foo:

  package Sympa::DataSource::Foo;

  use base qw(Sympa::DataSource);
  
  sub _open {
      my $self = shift;
      ...
      return $handle;
  }
  
  sub _next {
      my $self = shift;
      ...
      return [$email, $gecos];
  }
  
  1;
  
  # To use Sympa::DataSource::Foo:
  
  usr Sympa::DataSource;
  
  $ds = Sympa::DataSource->new('Foo', 'member', context => $list,
      key => val, ...);
  if ($ds and $ds->open) {
      while (my $member = $ds->next) {
          ...
      }
      $ds->close;
  }

DESCRIPTION

TBD.

Methods

new ( $type, $role, context => $that, [ key => val, ... ] ): Constructor. Creates a new instance of Sympa::DataSource.
Parameters:

$type: Type of data source. This corresponds to impemented subclasses.
$role: Role of data source. 'member', 'owner', 'editor' or 'custom_attribute'.
context => $that: Context. Sympa::List instance and so on.
key => val, ...: Optional or mandatory parameters.

Returns:

A new instance, or "undef" on failure.

close ( ): Instance method. Closes backend and does cleanup.
next ( ): Instance method. Returns the next entry in data source. Data source should have been opened.
open ( ): Instance method. Opens backend and returns handle.
get_id ( ): Instance method. Gets unique ID of the instance.
get_short_id ( ): Instance method. Gets data source ID, a hexadecimal string with 8 columns.
name ( ): Instance method. Gets human-readable name of data source. Typically it is value of {name} attribute or result of get_short_id().
role ( ): Instance method. Returns $role set by new().
__dsh ( ): Instance method, protected. Returns native query handle which _open() returned. This may be used only at inside of each subclass.

Methods subclass should implement

required_modules: Class or instance method. TBD.
_open ( [ options... ] ): Instance mthod. TBD.
_next ( [ options... ] ): Instance method, mandatory. TBD.
_next_ca ( [ options... ] ): Instance method, mandatory if the data source supports custom attribute. TBD.
_close ( ): Instance method. TBD.

Attributes

{context}: Context of the data source set by new().
Others: The other options set by new() may be accessed as attributes.

HISTORY

Sympa::DataSource appeared on Sympa 6.2.45b. See also "HISTORY" in Sympa::Request::Handler::include.